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<Title>Donut Width</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Donut Width</p>
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<img src="images/donutwidth0.png" width='150' height='120'>&nbsp;&nbsp;<img src="images/donutwidth1.png" width='150' height='120'>&nbsp;&nbsp;<img src="images/donutwidth2.png" width='150' height='120'>&nbsp;&nbsp;<img src="images/donutwidth3.png" width='150' height='120'>&nbsp;&nbsp;<img src="images/donutwidth4.png" width='150' height='120'>
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This example demonstrates the effects of different donut widths.<br><br>
Donut widths are configured by using different inner and outer radii when calling <a href="PieChart.setDonutSize.htm">PieChart.setDonutSize</a>.
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/donutwidth.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%!
// Function to create the demo charts
void createChart(WebChartViewer viewer, int chartIndex)
{
    // Determine the donut inner radius (as percentage of outer radius) based on input parameter
    int donutRadius = chartIndex * 25;

    // The data for the pie chart
    double[] data = {10, 10, 10, 10, 10};

    // The labels for the pie chart
    String[] labels = {"Marble", "Wood", "Granite", "Plastic", "Metal"};

    // Create a PieChart object of size 150 x 120 pixels, with a grey (EEEEEE) background, black
    // border and 1 pixel 3D border effect
    PieChart c = new PieChart(150, 120, 0xeeeeee, 0x000000, 1);

    // Set donut center at (75, 65) and the outer radius to 50 pixels. Inner radius is computed
    // according donutWidth
    c.setDonutSize(75, 60, 50, 50 * donutRadius / 100);

    // Add a title to show the donut width
    c.addTitle("Inner Radius = " + donutRadius + " %", "Arial", 10).setBackground(0xcccccc, 0);

    // Draw the pie in 3D
    c.set3D(12);

    // Set the pie data and the pie labels
    c.setData(data, labels);

    // Disable the sector labels by setting the color to Transparent
    c.setLabelStyle("", 8, Chart.Transparent);

    // Output the chart
    viewer.setChart(c, Chart.SVG);

    // Include tool tip for the chart
    viewer.setImageMap(c.getHTMLImageMap("", "", "title='{label}: {value}kg ({percent}%)'"));
}
%&gt;
&lt;%
// This example includes 5 charts
WebChartViewer[] viewers = new WebChartViewer[5];
for (int i = 0; i &lt; viewers.length; ++i) {
    viewers[i] = new WebChartViewer(request, "chart" + i);
    createChart(viewers[i], i);
}
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Donut Width&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Donut Width
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here are the chart images ****** --&gt;
    &lt;%
        for (int i = 0; i &lt; viewers.length; ++i) {
            out.write(viewers[i].renderHTML(response));
            out.write(" ");
        }
    %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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<br><hr class="separator"><div class="copyright">&copy; 2022 Advanced Software Engineering Limited. All rights reserved.</div>
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